#!/usr/bin/env python

import os, sys, re

def shift(mo):
    idx = (ord(mo.group(0)) - ord('a') + 2) % 26 + ord('a')
    return chr(idx)

line = sys.stdin.readline()
while line:
    line = re.sub('[a-z]', shift, line)
    sys.stdout.write(line)
    line = sys.stdin.readline()
